Temporary binder ring



Nov. 6 1923. 1,473,354

N. D. NACHTRIEB TEMPORARY BINDER RING v Filed Nov. 24 1922 Patented Nov. 6, 1923.

*UNITED STATES eAIsNI ortica.

NoaMA-N'n. NACHTRIEB, or CHICAGO, ILLINOIS, AssIGNoB. To HENRY fr. ADAMS, or

-. i. CHICAGO, ILLINOIS. I

TEMPORARY BINDER RING., i

Application sied November 24, 1922. serial No. ceases. Y

To all 'whom' t may concern:

Be it known that I, NORMAN D. NACH- TRIEB, a citizen of the United States, residing at Chicago, in the county of Cook i and tate of Illinois, have invented a new and useful Improvement in Temporary Binder' Rings, of which the following is a specification.

This invention relates to improvements in temporary binder rings,fwhich are especially designed for use in connection with loose-leaf books and the like, in which a cover having a flexible back with metal eyelets therein is employed, such eyelets serving to receive the metal rings which in turn retain the loose sheets f paper, or the like, within the covers of the binder. It is an obvious fact that the rings are also adapted for a multitude of other uses. For example, the rings may be usedfor retaining keys or other articles.

The ring here shown constitutes an improvement over the rings shown in prior Patents Nos. 692,584 and 1,331,226.

In that form of device embodying the features of my invent-ion, shown in the accompanying drawings, Figure 1 is a plan view, on an enlarged scale, showing the ring partially open, Fig. 2 is a view taken as indicated by the line 2 of Fig. 1, Fig. 3 is an enlarged broken view illustrating the manner in which the ring sections meet at their free ends as the ring Vis being closed, and Fig. 4 is a similar'view showing the free ends of the ring sections in interlocked position.

The binder ring shown comprises a ring sect-ion A, provided with a hinge port-ion A; and a ring Section B, provided with the hinfre portion B', the hinge portions being secured together by means of arivet 1.

The ring sections are made preferably of steel wire of round cross section, the metal of each ring section being attened at one end to form the hinge portion; so that the hinge will be of approximately the same thickness as the wire which forms the'ring sections. Also, in the operation of forming the hinge portions, provision ismade for causing the ring sections to occupy normally divergent planes, as will be understood from Figs. 2 and'. This is accomplished preferably by so swaging the metal by means of the dies in forming the hinge portions, as to make the hinge portions somewhat tapering in cross section. Thus,

as indicated in Fig. 2, the inner edge'3 of each hinge portion is thicker than the outerV edge 3a. The effect is, vwhen the hinge portions are brought together with their inner faces occupying a central plane, to throw the ring sections A and B inopposite directions from the central plane, as most clearly indicated in'Fig. 2.

The ring sections are provided at their free-endportions with interlock notches 4 and 5, as shown in Fig. 3,'similar to the notches shown in the rings disclosed in the patents above referred to. Thus, the ring section A is provided near its extremity with a transverse interlock notch 4, flanked on one side by a slanting shoulder 4a and on the other side by a projection 4b, the projection 4b ybeing at the extreme end ofthe ring section and having its end facev or surface beveled or slanting, as indicated by 4d, thus serving to make the end face or surface of the ring section A wedgeshaped,

beveled, 0r slanting. The metal of the ring section is cut away at its extremity, as indicated at 4. Similarly the member B is provided with an interlock notch flanked by a slanting shoulder 5a and a projection 5b. The projection 5b is at the extremeV end vof the ring section and has its end face or surface beveled or slanting, asindicated by 5d, thus serving to make Ithe end face or surface of the ring section B wedge-shaped, beveled 0r slanting. The end of this ring section B is also cut away at its extremity, as indicated at 5.

The ring sections are so lformed that as the ends A and B are brought together, the slanting faces 4d and 5d will normally slightly overlap, as indicated at 71. When it is desired to close the ring, the ends A and B are forced toward each other. The slanting surfaces 4d and d'will thus serve to move the ring sections from the divergent y mally meet, as shown in Fig. 3. Pressure j applied tothe ring sections will then cause the slanting faces 4d l and 5d on j the ends of thering sections to slide on each other until the surfaces 4 and 5C become adjacent. These surfaces 4c and 5C will then slide on each other until the projection et springs into the notch and the projection 5b springs into the notch 4, thus interlocking the rings, as shown in Fig. 4.

The surfaces of the project-ions lib and 5b lying adjacent thernotches i and 5 respectively, are preferably slightly undercut, as indicated at le and 5e, respectively. This undercuttinggN or bei/'elling` ot these surfaces assists in retaining the ends ot' the ring in interlocked position.

While l have shown and described certain embodiments of my invention, it is to be understood that it is capable ot' many modifications. Changes, therefore, in the construction and arrangement may be made Without departing- 'fromthe Spirit and scope of the invention as disclosed in the appended claim, in Which it is my intention to claim all novelty inherent in my invention as broadly as possible in View of the prior art.

Vhat l claim as new and desire to secure by Letters Patent, is:

i ring` of the character described, cornprisino a pair of ring,` sections having flattened tapered pivotally connected end portions whereby the tree ends are offset a portion 0f the thickness thereorl when separated, complementary hook-shaped extremities upon the free ends ot said sections each extremitmfv comprising' a beveled outer suri'ace and a base parallel therewith, a shank of substantial length and a hook having its rear engaging,` surface undercut adjacent said shank whereby separating' stresses upon said ring While closed will tighten the engagement of said extremities.

TWitness my hand and seal this 21st daf-f ot November, 1922.

NORMAN n. NAGHTRIEB. [L sg 

